Re: Drop elements from list
- To: mathgroup at smc.vnet.net
- Subject: [mg94191] Re: Drop elements from list
- From: Raffy <raffy at mac.com>
- Date: Sat, 6 Dec 2008 19:57:36 -0500 (EST)
- References: <ghdmqj$flr$1@smc.vnet.net>
On Dec 6, 3:14 am, SigmundV <sigmu... at gmail.com> wrote:
> Dear group,
>
> Consider a list of length, say, 20:
>
> a = RandomReal[{},20];
>
> How would you then drop/delete elements, say, 2-5 and 7-10 from this
> list? The built-in function Drop does not seem to include such a
> possibility. I should add that I do not have access to Mathematica 7,
> so any solution should work in version 6.
>
> Kind regards,
> Sigmund
There are many ways to do this; probably the fastest and most flexible
method would be:
x = Complement[ Range[Length[a]], Range[2,5], Range[7, 10] ];
a[[x]]